Question

encontre o perímetro do triângulo, A(-2,0), B(2,0) e C(0,3)​

Answer 1

A ( - 2 , 0 ) B ( 2 , 0 ) C ( 0 , 3 )

AB² = ( - 2 - 2 )² + ( 0 - 0 )²

AB² = 16

AB = 4

AC² = ( - 2 - 0 )² + ( 0 - 3 )²

AC² = 4 + 9

AC = v13

BC² = ( 2 - 0 )² + ( 0 - 3 )²

BC² = 4 + 9

BC = v13

AB + BC + AC =  

4 + v13 + v13 =

4 + 2v13 =

---------------- > 2 ( 2 + v13 ) u.c